EP0847341B1 - Audio device for vehicles, especially motor vehicles - Google Patents

Audio device for vehicles, especially motor vehicles Download PDF

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Publication number
EP0847341B1
EP0847341B1 EP96930984A EP96930984A EP0847341B1 EP 0847341 B1 EP0847341 B1 EP 0847341B1 EP 96930984 A EP96930984 A EP 96930984A EP 96930984 A EP96930984 A EP 96930984A EP 0847341 B1 EP0847341 B1 EP 0847341B1
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EP
European Patent Office
Prior art keywords
transponder
audio device
mobile part
vehicles
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96930984A
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German (de)
French (fr)
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EP0847341A1 (en
Inventor
Bernd Weiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Automotive Systems Deutschland GmbH
Volkswagen AG
Original Assignee
F and G Megamos Sicherheitselektronik GmbH
Volkswagen AG
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Application filed by F and G Megamos Sicherheitselektronik GmbH, Volkswagen AG filed Critical F and G Megamos Sicherheitselektronik GmbH
Publication of EP0847341A1 publication Critical patent/EP0847341A1/en
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Classifications

    • H04B5/45—
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/08—Constructional details, e.g. cabinet
    • H04B1/082—Constructional details, e.g. cabinet to be used in vehicles

Definitions

  • the invention relates to an audio device for Vehicles, in particular for motor vehicles, consisting of a fixed device part installed in the vehicle and a mechanically detachably connected handset a memory for storing a number code and one arranged in the fixed part of the device Control unit, by means of which with the handset removed Function of the audio device interrupted and after Reinstall the handset after one Authorization check the function is resumed the control device for the authorization check a comparator for comparing the im Handset stored numeric codes with that in the fixed Contains part of the security code stored in the device,
  • an audio device which in a device part installed in the vehicle Contains memory consisting of an EEPROM.
  • the solvable connected front panel has one Operating area 9 and also a memory 10 which is used to store a secret code.
  • a readout control device 11 for Reading the secret code from the memory 10 required.
  • the memory 10 is also an EEPROM like the memory in the permanently installed device part educated.
  • the invention is based on the object a device of the type mentioned in that regard to further develop that on the one hand the electronic Reduced effort and on the other hand the assembly of the Facility is facilitated.
  • This task will according to the invention by the design of the Generic audio device through the features of characteristic part solved.
  • the invention is characterized in that a special type of memory is used, namely a Transponder, the inductive one that is characteristic of it Install the numerical code in the control unit Feeds the device part.
  • the transponder stands out characterized in that no further elements are required are to read the information from the handset, because this is done directly via the coil of the transponder.
  • the control unit now contains the Transponder code receiving demodulator, which the Receives output signals from the transponder. Through the Arrangement of the demodulator and the downstream Amplifier in a customized circuit ASIC the assembly of the device at the manufacturer facilitated.
  • the innovation is also characterized by the fact that the use of a transponder the need for electrical connection lines and thus the galvanic Coupling between the handset and the fixed device part not applicable.
  • the transponder When the transponder is excited via sends corresponding control means in the control circuit this character code that is characteristic of it, the by means of the comparator device in the control unit with the one previously stored in the control unit Security code is compared. Returns the result of the Comparing a match, the Audio device released or if there is no Match not unlocked. Because of the practically any security combinations that specified by the word length of the transponder code security for audio equipment in vehicles that are at high risk of theft, significantly improved.
  • the handset can be used the transponder part of the front panel of the audio device be.
  • the transponder part of the front panel of the audio device be.
  • the part to be removed is limited on a spatially narrow front panel section.
  • the handset is a machine readable card (Check card) is in ISO format.
  • Check card machine readable card
  • This will Transponder on a carrier in the format of a usual one Check card attached, so that he in turn as personal identification can serve.
  • the check card can be used with the Transponder itself form the handset without a further detachable from the fixed installed device part Part is required.
  • transponder can be a wafer-programmed read-only Be a transponder.
  • This has the advantage that it is practically one of a kind with regard to the Transponder codes, because in its manufacture the his own code is programmed. A replica This code is due to the multitude of through the digital number sequence representable possibilities practically excluded.
  • the drawing shows a block diagram for explanation the essential function.
  • A is the one installed in the vehicle Designated part of the device, within which one Control unit 1 is provided, which is described in more detail below is explained.
  • the control device 1 contains a demodulator 4 for Reception of the digital transmitted by the transponder T. Number codes.
  • the demodulator 4 is followed by a Amplifier 5 and a comparator 2, whose second entrance with a security code containing memory 3 is connected.
  • the components Demodulator 4 and amplifier 5 are in one customer-specific circuit (ASIC), while the comparator device 2 and the memory 3 in a microprocessor or a non-volatile Memory are housed.
  • ASIC customer-specific circuit
  • the transponder T can be a wafer-programmed read-only Transponder, a read-write transponder or a be a cryptological transponder.
  • the user sets the handset B with the Transponder T in the mechanical recording in the fixed Device part A on, the transponder T for transmission the digital number code sequence characteristic of him prompted.
  • This number code sequence is used by the demodulator 4 received and demodulated, then amplified and in the comparator device 2 with the in advance for the respective transponder T typical security code in Memory 3 compared.
  • the Audio device via means not shown released and if it does not match, it remains blocked.

Abstract

The invention pertains to an audio device for vehicles, especially for motor vehicles, consisting of a device part (A) that is fixedly installed in the vehicle and a mobile part (B) that is mechanically detachably connected thereto, as well as a control unit (1) that is situated in the fixed device part and used to interrupt the functioning of the audio device when the mobile part is removed and, following an authorization check, to restore functioning once the mobile part has been returned. The innovation in this device compared to previous devices of this kind consists in the fact that the mobile part (B) has a transponder (T) and that the control unit (1) contains a comparator (2) to compare the numeric data code emitted by the transponder (T) with a prestored redundant code.

Description

Die Erfindung betrifft eine Audioeinrichtung für Fahrzeuge, insbesondere für Kraftfahrzeuge, bestehend aus einem ortsfest im Fahrzeug installierten Geräteteil und einem mechanisch lösbar damit verbundenen Mobilteil mit einem Speicher zum Speichern eines Zahlencodes sowie einer im ortsfesten Geräteteil angeordneten Steuereinheit, mittels der bei abgenommenem Mobilteil die Funktion der Audioeinrichtung unterbrochen und nach Wiedereinsetzen des Mobilteils im Anschluß an eine Berechtigungsprüfung die Funktion wiederaufgenommen wird, wobei die Steuereinrichtung für die Berechtigungsprüfung eine Vergleichereinrichtung zum Vergleich des im Mobilteil gespeicherten Zahlencodes mit dem im ortsfesten Geräteteil gespeicherten Sicherheitscode enthält,The invention relates to an audio device for Vehicles, in particular for motor vehicles, consisting of a fixed device part installed in the vehicle and a mechanically detachably connected handset a memory for storing a number code and one arranged in the fixed part of the device Control unit, by means of which with the handset removed Function of the audio device interrupted and after Reinstall the handset after one Authorization check the function is resumed the control device for the authorization check a comparator for comparing the im Handset stored numeric codes with that in the fixed Contains part of the security code stored in the device,

Zum Schutz von Audioeinrichtungen, beispielsweise Autoradios, Autotelefonen u.ä. für den mobilen Einsatz gedachten Geräten, ist es bekannt, das Mobilteil elektrisch und mechanisch lösbar mit dem im Fahrzeug installierten Geräteteil zu verbinden. Wenn der Benutzer das Fahrzeug verläßt, wird beim Lösen des Mobilteils die Funktion unterbrochen. Setzt anschließend der berechtigte Benutzer das Mobilteil wieder an der vorgesehenen Stelle in das ortsfeste Geräteteil ein, wobei die entsprechenden mechanischen Kontakte die elektrische Verbindung zwischen Mobilteil und ortsfestem Gehäuseteil herstellen, wird die Funktion der Audioeinrichtung freigegeben. Die Freigabe erfolgt dabei in der Regel nach einer Prüfung, ob es sich bei dem eingesetzten Mobilteil um das des berechtigten Benutzers handelt. Bei bekannten Einrichtungen werden im Mobilteil bespielsweise integrierte Schaltkreise verwendet, die über die Verbindungsklemmen mit der notwendigen Betriebsspannung versorgt werden und deren Ausgangs- und Eingangsanschlüsse ebenfalls hierüber mit dem ortsfesten Geräteteil verbunden werden. Eine solche Verbindung wirft häufig Kontaktprobleme auf, die zu einem fehlerhaften Verhalten führen, beispielsweise dahingehend, daß die Funktion der Audioeinrichtung auch für den berechtigten Benutzer nicht wieder freigegeben wird.To protect audio equipment, for example Car radios, car phones, etc. for mobile use imaginary devices, it is known the handset electrically and mechanically detachable with that in the vehicle to connect the installed device part. If the user leaves the vehicle, when you release the handset Function interrupted. Then the authorized one sets User the handset back in place into the fixed part of the device, the corresponding mechanical contacts the electrical connection between Manufacture handset and stationary housing part, the Function of the audio device released. The release usually takes place after a check whether it is for the handset used, that of the authorized User acts. In known facilities Handset, for example, integrated circuits used that over the connecting terminals with the necessary operating voltage are supplied and their Output and input connections also with this be connected to the fixed part of the device. Such Connection often poses contact problems that lead to one lead to faulty behavior, for example in that the function of the audio device too not released again for the authorized user becomes.

Eine Audioeinrichtung der eingangs genannten Art ist aus der US 5 349 326 bekannt.An audio device of the type mentioned is off U.S. 5,349,326.

Hieraus ist eine Audioeinrichtung bekannt, welche in ihrem ortsfest im Fahrzeug installierten Geräteteil einen Speicher bestehend aus einem EEPROM enthält. Die lösbar damit verbundene Frontplatte weist einen Bedienungsbereich 9 sowie ebenfalls einen Speicher 10 auf, der zur Speicherung eines geheimen Codes dient. Darüber hinaus ist eine Auslese-Steuereinrichtung 11 zum Auslesen des geheimen Codes aus dem Speicher 10 erforderlich. Auch der Speicher 10 ist als EEPROM ebenso wie der Speicher im fest installierten Geräteteil ausgebildet.From this an audio device is known, which in a device part installed in the vehicle Contains memory consisting of an EEPROM. The solvable connected front panel has one Operating area 9 and also a memory 10 which is used to store a secret code. In addition, a readout control device 11 for Reading the secret code from the memory 10 required. The memory 10 is also an EEPROM like the memory in the permanently installed device part educated.

Zur Übertragung des geheimen Codes aus dem Mobilteil in den ortsfesten Geräteteil ist eine aufwendige Elektronik bestehend aus den Blöcken 9,10,11 erforderlich.To transfer the secret code from the handset in the stationary part of the device is complex electronics consisting of blocks 9,10,11 required.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art dahingehend weiterzuentwickeln, daß einerseits der elektronische Aufwand verringert und andererseits der Zusammenbau der Einrichtung erleichtert wird. Diese Aufgabe wird erfindungsgemäß durch die Ausgestaltung der gattungsgemäßen Audioeinrichtung durch die Merkmale des kennzeichnenden Teils gelöst.In contrast, the invention is based on the object a device of the type mentioned in that regard to further develop that on the one hand the electronic Reduced effort and on the other hand the assembly of the Facility is facilitated. This task will according to the invention by the design of the Generic audio device through the features of characteristic part solved.

Die Erfindung zeichnet sich dadurch aus, daß eine besondere Art von Speicher verwendet wird, nämlich ein Transponder, der induktiv den für ihn charakteristischen Zahlencode in die Steuereinrichtung im fest installieren Geräteteil einspeist. Der Transponder zeichnet sich dadurch aus, daß keine weiteren Elemente erforderlich sind, um die Information aus dem Mobilteil auszulesen, da dies über die Spule des Transponders unmittelbar erfolgt. Andererseits enthält die Steuereinheit nunmehr den den Transpondercode empfangenden Demodulator, welcher die Ausgangssignale des Transponders empfängt. Durch die Anordnung von Demodulator und dem ihm nachgeschalteten Verstärker in einem kundenspezifischen Schaltkreis ASIC wird der Zusammenbau der Vorrichtung beim Hersteller erleichtert.The invention is characterized in that a special type of memory is used, namely a Transponder, the inductive one that is characteristic of it Install the numerical code in the control unit Feeds the device part. The transponder stands out characterized in that no further elements are required are to read the information from the handset, because this is done directly via the coil of the transponder. On the other hand, the control unit now contains the Transponder code receiving demodulator, which the Receives output signals from the transponder. Through the Arrangement of the demodulator and the downstream Amplifier in a customized circuit ASIC the assembly of the device at the manufacturer facilitated.

Die Neuerung zeichnet sich ferner dadurch aus, daß durch die Verwendung eines Transponders die Notwendigkeit für elektrische Verbindungleitungen una somit die galvanische Kopplung zwischen Mobilteil und ortsfestem Geräteteil entfällt. Bei Anregung des Transponders über entsprechende Steuermittel in der Steuerschaltung sendet dieser den für ihn charakteristischen Zahlencode aus, der mittels der Vergleichereinrichtung in der Steuereinheit mit dem in der Steuereinheit vorab gespeicherten Sicherheitscode verglichen wird. Ergibt das Ergebnis des Vergleichs eine Übereinstimmung, wird die Audioeinrichtung freigegeben bzw. bei mangelnder Übereinstimmung die Sperrung nicht aufgehoben. Aufgrund der praktisch beliebigen Sicherheitskombinationen, die durch die Wortlänge des Transpondercodes vorgegeben werden können, wird die Sicherheit für Audioeinrichtungen in Fahrzeugen, die ein hohes Diebstahlrisiko tragen, erheblich verbessert. The innovation is also characterized by the fact that the use of a transponder the need for electrical connection lines and thus the galvanic Coupling between the handset and the fixed device part not applicable. When the transponder is excited via sends corresponding control means in the control circuit this character code that is characteristic of it, the by means of the comparator device in the control unit with the one previously stored in the control unit Security code is compared. Returns the result of the Comparing a match, the Audio device released or if there is no Match not unlocked. Because of the practically any security combinations that specified by the word length of the transponder code security for audio equipment in vehicles that are at high risk of theft, significantly improved.

In einer Variante der Erfindung kann das Mobilteil mit dem Transponder Teil der Frontblende der Audioeinrichtung sein. Im Gegensatz zu anderen aus der Praxis bekannten Lösungen, bei denen die Audioeinrichtung ganz oder teilweise beim Verlassen des Fahrzeuges mitgenommen werden muß, beschränkt sich hierbei das auszubauende Teil auf einen räumlich eng begrenzten Frontblendenabschnitt.In a variant of the invention, the handset can be used the transponder part of the front panel of the audio device be. In contrast to others known from practice Solutions where the audio device is entirely or partially taken away when leaving the vehicle the part to be removed is limited on a spatially narrow front panel section.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß das Mobilteil eine maschinenlesbare Karte (Scheckkarte) im ISO-Format ist. Hierdurch wird der Transponder auf einem Träger im Format einer üblichen Scheckkarte befestigt, so daß er seinerseits als personenbezogene Identifizierung dienen kann. Hierdurch wird ermöglicht, daß der Benutzer den für ihn charakteristischen Transponder unterschiedlichen Geräten zuführen kann. Dabei kann die Scheckkarte mit dem Transponder selbst das Mobilteil bilden, ohne daß ein weiteres vom ortsfest installierten Geräteteil lösbares Teil erforderlich ist.According to a preferred embodiment of the invention provided that the handset is a machine readable card (Check card) is in ISO format. This will Transponder on a carrier in the format of a usual one Check card attached, so that he in turn as personal identification can serve. Hereby allows the user to do the work for him characteristic transponder different devices can supply. The check card can be used with the Transponder itself form the handset without a further detachable from the fixed installed device part Part is required.

Weitere bevorzugte Ausführungsformen sind den nachfolgenden Unteransprüchen zu entnehmen. Insbesondere kann der Transponder ein waferprogrammierter Read-Only Transponder sein. Dieser hat den Vorteil, daß es sich dabei praktisch um ein Unikat hinsichtlich des Transpondercodes handelt, da bei dessen Herstellung der ihm eigene Code einprogrammiert wird. Ein Nachbilden dieses Codes ist aufgrund der Vielzahl der durch die digitale Zahlenfolge darstellbaren Möglichkeiten praktisch ausgeschlossen.Further preferred embodiments are the the following subclaims. Especially the transponder can be a wafer-programmed read-only Be a transponder. This has the advantage that it is practically one of a kind with regard to the Transponder codes, because in its manufacture the his own code is programmed. A replica This code is due to the multitude of through the digital number sequence representable possibilities practically excluded.

Die Erfindung wird im folgenden anhand einer Zeichnung näher erläutert, die ein mögliches Ausführungsbeispiel darstellt.The invention is described below with reference to a drawing explained in more detail, which is a possible embodiment represents.

Die Zeichnung zeigt ein Blockschaltbild zur Erläuterung der wesentlichen Funktion.The drawing shows a block diagram for explanation the essential function.

Hierbei ist mit A das ortsfest im Fahrzeug installierte Geräteteil bezeichnet, innerhalb dessen eine Steuereinheit 1 vorgesehen ist, die im folgenden näher erläutert wird.Here, A is the one installed in the vehicle Designated part of the device, within which one Control unit 1 is provided, which is described in more detail below is explained.

Lösbar mit dem ortsfest installierten Geräteteil A ist ein Mobilteil B verbunden, welches einen Transponder T enthält. Ortsfestes Geräteteil A und Mobilteil B sind über nicht dargestellte mechanische Mittel miteinander koppelbar.Can be detached with the permanently installed device part A. a handset B connected, which a transponder T contains. Fixed device part A and handset B are with mechanical means, not shown connectable.

Die Steuereinrichtung 1 enthält einen Demodulator 4 zum Empfang des vom Transponder T ausgesandten digitalen Zahlencodes. Dem Demodulator 4 nachgeschaltet ist ein Verstärker 5 und eine Vergleichereinrichtung 2, deren zweiter Eingang mit einem einen Sicherheitscode enthaltenden Speicher 3 verbunden ist. Die Komponenten Demodulator 4 und Verstärker 5 sind auf einem kundenspezifischen Schaltkreis (ASIC) untergebracht, während die Vergleichereinrichtung 2 und der Speicher 3 in einem Mikroprozessor bzw. einem nichtflüchtigen Speicher untergebracht sind.The control device 1 contains a demodulator 4 for Reception of the digital transmitted by the transponder T. Number codes. The demodulator 4 is followed by a Amplifier 5 and a comparator 2, whose second entrance with a security code containing memory 3 is connected. The components Demodulator 4 and amplifier 5 are in one customer-specific circuit (ASIC), while the comparator device 2 and the memory 3 in a microprocessor or a non-volatile Memory are housed.

Der Transponder T kann ein waferprogrammierter Read-Only Transponder, ein Read-Write Transponder oder ein cryptologischer Transponder sein. The transponder T can be a wafer-programmed read-only Transponder, a read-write transponder or a be a cryptological transponder.

Die dargestellte Anordnung arbeitet wie folgt:The arrangement shown works as follows:

Wenn das Mobilteil B aus der vorgesehenen mechanischen Halterung des ortsfesten Geräteteils A entfernt wird, wird die Funktion der Audioeinrichtung blockiert.If the handset B from the intended mechanical Bracket of the stationary device part A is removed, the function of the audio device is blocked.

Setzt nun der Benutzer das Mobilteil B mit dem Transponder T in die mechanische Aufnahme im ortsfesten Geräteteil A ein, wird der Transponder T zum Aussenden der für ihn charakteristischen digitalen Zahlencodefolge veranlaßt. Diese Zahlencodefolge wird vom Demodulator 4 empfangen und demoduliert, anschließend verstärkt und in der Vergleichereinrichtung 2 mit dem vorab für den jeweiligen Transponder T typischen Sicherheitscode im Speicher 3 verglichen.Now the user sets the handset B with the Transponder T in the mechanical recording in the fixed Device part A on, the transponder T for transmission the digital number code sequence characteristic of him prompted. This number code sequence is used by the demodulator 4 received and demodulated, then amplified and in the comparator device 2 with the in advance for the respective transponder T typical security code in Memory 3 compared.

Bei Übereinstimmung beider Codes wird die Audioeinrichtung über nicht dargestellte Mittel freigegeben und bei Nichtübereinstimmung bleibt sie gesperrt.If both codes match, the Audio device via means not shown released and if it does not match, it remains blocked.

Claims (6)

  1. A audio device for vehicles, especially motor vehicles, consisting of a device part (A) in a stationary installation in the vehicle and a mobile part (B) mechanically detachable connected thereto, with a memory for storing a numerical code and a control unit (1) arranged in the stationary device part by means of which the functioning of the audio device is interrupted when the mobile part is removed, and functioning is resumed after replacing the mobile part (B) following an authorization check, with the control unit having a comparator device (2) for comparing the numerical code stored in the mobile part with the security code stored in the stationary device part for the authorization check, characterized in that the mobile part (B) has a transponder (T), and the control unit (1) has a customer-specific circuit (ASIC) into which are integrated a demodulator (4) for receiving the transponder code and a downstream amplifier.
  2. A audio device according to Claim 1, characterized in that the mobile part with the transponder is part of the front panel of the audio device.
  3. A audio device according to one of the preceding claims, characterized in that the mobile part is formed by a machine-readable card in ISO format (check card).
  4. A audio device according to one of the preceding claims, characterized in that the transponder is a wafer-programmed read-only transponder.
  5. A audio device according to one of the preceding claims, characterized in that the transponder is a cryptological transponder.
  6. A audio device according to one of the preceding claims, characterized in that the transponder is a read-write transponder.
EP96930984A 1995-09-01 1996-08-30 Audio device for vehicles, especially motor vehicles Expired - Lifetime EP0847341B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29514056U 1995-09-01
DE29514056U DE29514056U1 (en) 1995-09-01 1995-09-01 Audio device for vehicles, in particular for motor vehicles
PCT/EP1996/003817 WO1997009200A1 (en) 1995-09-01 1996-08-30 Audio device for vehicles, especially motor vehicles

Publications (2)

Publication Number Publication Date
EP0847341A1 EP0847341A1 (en) 1998-06-17
EP0847341B1 true EP0847341B1 (en) 1999-03-03

Family

ID=8012497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96930984A Expired - Lifetime EP0847341B1 (en) 1995-09-01 1996-08-30 Audio device for vehicles, especially motor vehicles

Country Status (6)

Country Link
EP (1) EP0847341B1 (en)
JP (1) JP3201528B2 (en)
AU (1) AU6985496A (en)
DE (2) DE29514056U1 (en)
ES (1) ES2128873T3 (en)
WO (1) WO1997009200A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711788A1 (en) 1997-03-21 1998-09-24 Bosch Gmbh Robert Device for influencing the operating state of an electronic device
DE19722181C1 (en) * 1997-05-27 1998-11-26 Siemens Ag Motor vehicle installation device for a mobile phone
US6469615B1 (en) * 1997-10-27 2002-10-22 Darren J. Kady Locking device for tools and equipment
DE19933067C2 (en) * 1999-07-15 2001-11-15 Am3 Automotive Multimedia Ag Vehicle communication system
DE19949251A1 (en) * 1999-10-13 2001-04-19 Mannesmann Vdo Ag Car radio with anti-theft device
GB2555863A (en) * 2016-11-15 2018-05-16 Calendar Entpr Co Ltd Energy saving apparatus for electric roller shutter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723931A1 (en) * 1987-07-20 1988-06-16 Digatec Electronic Systems CAR RADIO WITH ANTI-THEFT SECURITY
JPH0569778A (en) * 1991-07-03 1993-03-23 Yamaha Corp On-vehicle audio device
IT1252191B (en) * 1991-12-11 1995-06-05 Delta Elettronica Spa SAFETY EQUIPMENT FOR AN AUXILIARY ELECTRONIC DEVICE MOUNTED ON A MEANS OF LOCOMATION.
JPH07509793A (en) * 1992-05-11 1995-10-26 サーブ　スカニア　コンビテック　アクティボラグ Device for detection and information transfer
IT1268471B1 (en) * 1993-07-22 1997-03-04 Gemini Elettronica VEHICLE SECURITY SYSTEM

Also Published As

Publication number Publication date
ES2128873T3 (en) 1999-05-16
DE29514056U1 (en) 1995-10-26
JP3201528B2 (en) 2001-08-20
JPH11509160A (en) 1999-08-17
AU6985496A (en) 1997-03-27
WO1997009200A1 (en) 1997-03-13
DE59601395D1 (en) 1999-04-08
EP0847341A1 (en) 1998-06-17

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